Vol.:(0123456789) 1 3 Clean Technologies and Environmental Policy (2018) 20:1087–1095 https://doi.org/10.1007/s10098-018-1513-7 ORIGINAL PAPER Steel slag and iron ore tailings to produce solid brick Suzy Magaly Alves Cabral de Freitas 1 · Leila Nobrega Sousa 1 · Pollyana Diniz 1 · Máximo Eleotério Martins 2 · Paulo Santos Assis 1 Received: 19 April 2017 / Accepted: 22 February 2018 / Published online: 1 March 2018 © Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract The main goals of this work were to verify the potential of reuse of steel slag and iron ore tailings as secondary raw materi- als to produce solid brick and to evaluate whether this application can consume the amount of slag generated in Brazil. The feasibility of this application was verified through a comparative study. The mechanical behavior of concrete artifacts and pressed bricks made from residues was compared with others described in the literature. The residues were initially character- ized using chemical and granulometric analysis. The bricks were produced by mixing different compositions of the residues with the addition of cement in the contents of 0 and 5%. The bricks were pressed in a manual mechanical press and sent to curing. The values of flexural strength of the bricks were higher than 2.0 MPa, and the average weight of the bricks was like those found in the ecological bricks. The simulation with the construction of houses showed that the proposed application can consume the amount of slag generated in Brazil. The generation of the income from carbon credits associated with CO 2 reduction is an incentive to implement environmental management tools in Quadrilátero Ferrífero territory, specifically, industrial symbiosis and the carbon market. Keywords Steel slag · Iron ore tailings · Solid brick · Low carbon · Construction Introduction The society, represented by consumers, suppliers and gov- ernments, among other members, aware of global trends that point to the growth in industrial production, consumption and waste generated, values initiatives related to sustainable development. There is an environmental and economic concern with the destination of these wastes, which if improperly discarded may contaminate the environment and create a risk to public health. It stimulates the growth of studies that seek alterna- tives for reuse of these materials. Thus, organizations interested in practices that achieve sustainable development and minimize environmental problems have adopted the most diverse models and tools of environmental management. The carbon price is valuable tool for the private sector in terms of the development of competitive advantages. Likewise the adoption of environmental management tools and market instruments makes possible the adequate practice of industrial solid waste (ISW) management, justi- fying the conduct of this work. Initially, it is proposed here to present to industries ways to implement more sustainable projects, considering inter- national policy and goals and then to assess the potential of reuse of residues for the manufacture of solid bricks, pri- oritizing a manufacturing process with lower greenhouse gas (GHG) emission and with lower energy consumption. The production chain was not considered as a whole, that is, suppliers and customers are not the focus of this preliminary study. The theme gains relevance when considering high-impact activities in the environment and high representation in the territory, as in the steel, mining and civil construction sec- tors, especially in Brazil. According to the World Steel Association, in 2015 world crude steel production reached 1.62 billion metric tons, with * Suzy Magaly Alves Cabral de Freitas [email protected] 1 Rede Temática em Engenharia de Materiais - REDEMAT, Universidade Federal de Ouro Preto, Praça Tiradentes, 20, Centro, Ouro Preto, MG, Brazil 2 Departamento de Produção, Universidade Federal de Ouro Preto, UFOP, Campus do Morro do Cruzeiro, Bauxita, Ouro Preto, MG, Brazil
Steel slag and iron ore tailings to produce solid brick
Apr 25, 2023
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Related Documents
